// ******************************************************************************
// Spine Runtimes Software License v2.5
//
// Copyright (c) 2013-2016, Esoteric Software
// All rights reserved.
//
// You are granted a perpetual, non-exclusive, non-sublicensable, and
// non-transferable license to use, install, execute, and perform the Spine
// Runtimes software and derivative works solely for personal or internal
// use. Without the written permission of Esoteric Software (see Section 2 of
// the Spine Software License Agreement), you may not (a) modify, translate,
// adapt, or develop new applications using the Spine Runtimes or otherwise
// create derivative works or improvements of the Spine Runtimes or (b) remove,
// delete, alter, or obscure any trademarks or any copyright, trademark, patent,
// or other intellectual property or proprietary rights notices on or in the
// Software, including any copy thereof. Redistributions in binary or source
// form must include this license and terms.
//
// THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF
// USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// ******************************************************************************

part of spine_core;

class Skin {
  final String name;
  final List<Map<String, Attachment>> attachments = <Map<String, Attachment>>[];

  Skin(this.name) {
    if (name == null) throw ArgumentError('name cannot be null.');
  }

  void addAttachment(int slotIndex, String name, Attachment attachment) {
    if (attachment == null) throw ArgumentError('attachment cannot be null.');
    if (slotIndex >= attachments.length) attachments.length = slotIndex + 1;
    if (attachments[slotIndex] == null)
      attachments[slotIndex] = <String, Attachment>{};
    attachments[slotIndex][name] = attachment;
  }

  Attachment getAttachment(int slotIndex, String name) {
    if(attachments[slotIndex] == null) return null;
    if (slotIndex >= attachments.length) return null;
    return attachments[slotIndex][name];
  }

  void attachAll(Skeleton skeleton, Skin oldSkin) {
    int slotIndex = 0;
    for (int i = 0; i < skeleton.slots.length; i++) {
      final Slot slot = skeleton.slots[i];
      final Attachment slotAttachment = slot.getAttachment();
      if (slotAttachment != null && slotIndex < oldSkin.attachments.length) {
        final Map<String, Attachment> map =
            oldSkin.attachments[slotIndex] ?? <String, Attachment>{};
        for (String key in map.keys) {
          final Attachment skinAttachment = map[key];
          if (slotAttachment == skinAttachment) {
            final Attachment attachment = getAttachment(slotIndex, key);
            if (attachment != null) slot.setAttachment(attachment);
            break;
          }
        }
      }
      slotIndex++;
    }
  }
}
